Tube and header connection.



J.'C. ALEXANDER. TUBE AND HEADER CONNECTION. APPLIOATIDN FILED 13110.13, 1909.

Patented Oct. 25, 1910.

2 SHEETS-SHEET 1.

WJTNESSES.-

J.. C. ALEXANDER. TUBE AND HEADER CONNECTION.

APPLIOATION FILED 1)Bo.13,1909` Patented Oct. 25, 1910.

2 SHEETS-SHEET 2.

WJ T /VESSES INVENTQR www@ ' awess ,may

. circulating pipes `.with vheaders accordingto.. 5o

"i a modilied formv of mantel pi F 7 lis a transverse section on the line 'F4-' densers and the like and particularly ap- 4UNITED sTA'rESre'rENT OFFICE.

Am (L 0l' 'man aim manna. collie-non.

rtains to improvements in the connections m the circulating pipes within their respec tive. headers.

The invention aimsas a rimary object to provide a novel means fiir uniting the circulating to the header whereby ready had thereto for the purpos of repairsand -for cleani and removing the mantel pipes when need il. and thereby providi a stronger construction and doing awav wit i the troublesome inside manhole.

e invention aims asl a further to provide a novel construction of 'circulating pipe having a special constructed eoupl to actin the place of a stay-bolt and provliilf ing a construdion which will he simple inexpensive to manufacture 4and practil and cient. i-n use.

The detail construction will appear in the course of the following description in which 4reference ishad to the aecolnpan drawingsforming a part 'of these speci like nume s designating like 'parts throughout the several views.' wherein,

Figureg/l is a central longitudinal section taken through a circulating 'pipe and illustrating my improved connection between headers. 2` is a transverse-section on Fig theline 2 2 of Fig. 1. Fig. 3 is a longitudi llali'sectional view illustrating the screw" coupling the double bevel packing and a portieri of the liner pipe,in detaclhl oul an en a scale of my improved connection as'il ustrated in Fig. 1. Fig. 5 is a view illustrating the manner of connecting show'- .my invention. Fig. 6 is a similar view and of- `ig. 6. i In the practical embodiment of' my iuvention 1 employ a cast iron mantel pipe .1,

tions.-

cou l' double rela. ,y tion. F .p4 is a fragmentary sectional view'- gations 2, as shown in 1, Qiand 5, but which may be as readily ori'ned with spiral dan was man Patented oet.. 25, 1910. vannimmtnettime-iler13,19.lumineuse.

Vwhich is provided with longitudinal coi'iucorrugations 2 as shown in Figs-6 and 7,-

if desired, the of thlrclprrugations beingto v a ter a ing service for the Il; gm as a storage or reservoir for the liner pipe 3 which is within said liner pipe provides a l 1. The liner pipe 3 is preferably of finished metal and fectly smoothv inner surface which will a ord the .least tol the steam or passing therethrough. For the purpose of increasing the heat area and the steam or air a spiral casting 4 is disposed within said liner 3; the function thereof beingv to impart to -the steam or air` I through said liner an axial whi ing movement. The ends of the mantel ipe v1 abut the headers 5 which are. at each end thereof. while the ends of The header 5 is forinedin its inner wall t with a cylindrical 'opening-6. und.

Ain its outer wall with a threaded o ning n alined with sid opening 6. A cy indiical screw con 8 is provided with 'nnenthrea end 9, adapted tobe screwed wit "ntli'c header o ning and with an internally threaded orward end 10 adapted to litl about and to be screwed upon the threadedend ofthe liner pipe 3 projecting within the header. Previousfto the connection of the forward` end 10 Vof the screw -8 to the en d of the liner pi 3 vel cking ring Il isplacediipon the said-bev endV of said linerpipe, and is adapted to be forced tigh'tl in position between said mantel ipe 1 an the ta red opening 6 in the hea er by means o said screw coupling 8, thus taking the place of an* inside man-hole. l

It will he noted thatthe screw couplings 8are provided with longitudinal openings 12 therein to permit the passage of the steam or a ir in circulation therethrough. and with liner pipe 3 protrudeqfr'om the distance sol liner pipe 3 to securel seat the double bevel acking rin 11 an bind the tube and eader toget er.

In Figs. 5 and 6 I have illustrated t-lie headers 5 secured to the pipes l and their associated parts in juxtaposed pairs at the ends thereof. This arrangementcauses the headers 5 tohave a relative staggered disposition whereby the circulating pipes' afford a tortuous passage for the steam or air therethrough and whereby free expansion of Said pipes is permitted. 'The enlarged end 9 .of the screw coupling 8 is 4arranged to project slightly from the lieader' to receive an in closing cap-nut 14 between which and the header 5 is referably arranged a packing strip 15 to orm a secure joint. i

While the elements herein shown and described are illustrated in connection with 'a superheating coil, and are well adapted to serve the functions set forth, it is obvious that.by minor changes which will at once suggest themselves to persons skilled in the art, the said elements may be embodied to serve their appointments equally as well wit-hin condensers and like structures employing continuously connected circulating pipes, that various other minor changesmay be made in the proportion, shape and arrangement of the several parts without departing from the spirit and sco of the invention as ydefined 1n the appen ed claims. f

Having thus fully described my-invention Iclaim: f

L In a circulating pipe and header connection, the combination of. a header provided vwith a tapered opening in one wall i opening-in its thereof and with :1 -threaded opposite wall, a circulating pipefor attachment therein" provided with.. a tapering threaded end, a double bevel packing r' associated on said pipe-between the portion thereof and Said tapered o ening in"said header amica screw-coupling hav an internallythre'adedforward end ada tovengage the threaded end of said circulating pipe within the header to securely `seat associated on a screw' coupling having an internally threaded forward end adapted to engage upon the threaded end of said circulating pipe Within the header to securely seatv packing ring and having a threaded outer end engaging Within said alined threaded opening in 'said header, and a cap-nut adal ti ed-to'be screwed uponsaid outer threa ed end of said coupling outside the header substantially as described.

3. In acirculating pipe and header connection'the' combination of a header vprovided. with alined tapered and threaded openings, a circulating pi e havin a tapering end projecting' withiny said cader, a

packing ring having beveled inner and outer faces associated about said circulating pipebetween the beveled portion thereof and said taperedopening, a screw coupling engaging Withinsaid threaded openingl 'to forcesaid packiig rxg securely in posit-ion,

and a' cap-nut a to be screwed upon said coupling outside the header to form a secure joint, substantiall as described.

In testimony. whereo I aiiix my signature in presence of two'witnesses'.

'JAMES c. ALEXANDER.. v VVitnessesz 

